I also see the development of Litecoin in the market from time to time that continues to grow well and the price also increases. The growth of altcoins currently seems uniform, all altcoins go up. To increase litecoin seems to take a long time so you can get a big profit. So, you should invest litecoin in the long run.
With the time litecoin is in existence i never saw any major market adoption for it, it is always considered as the silver to bitcoin because it is a exact replica of the bitcoin software but with small tweaks here and there, right now some gambling sites started accepting litecoin and it is a good sign as we might expect more markets accepting it in the future and if that happens the market will grow rapidly.